The Moveable E-Chock Wheel Accessory from Erickson is ideal for car enthusiasts, racers and anyone who needs to haul cars, race cars, hot rods, UTVs, ATVs or trucks from place to place. Perfect for use with horizontal floor mounted E-tracks that are common in trucks and trailers, these wheel chocks can be easily put into place wherever you need them. Then they can be moved as many times as you need, depending on the size of vehicle youre transporting Made from durable steel with a reinforced base support with a yellow powder coating to prevent rust, these wheel chocks are super quick and easy to install and withstand regular use.